Table 4.
Effect of birthweight and sow lactation feed allowance on piglet growth performance from weaning until day 69
| Low BW | Av BW | P-value | ||||||
|---|---|---|---|---|---|---|---|---|
| Low FA | High FA | Low FA | High FA | SEM | Birthweight | Feed allowance | Birthweight × feed allowance | |
| Piglet weight, kg | ||||||||
| Week 5 | 7.7 | 8.6 | 8.9 | 9.7 | 0.39 | <0.001 | 0.005 | 0.89 |
| Week 7 | 13.9 | 14.6 | 16.0 | 16.9 | 0.55 | <0.001 | 0.049 | 0.776 |
| Week 10 | 24.4 | 25.3 | 26.8 | 27.8 | 0.79 | <0.001 | 0.101 | 0.966 |
| Piglet weight gain weaning—10 weeks, kg | 17.3 | 17.4 | 19.0 | 19.1 | 0.61 | <0.001 | 0.91 | 0.948 |
| Relative growth week 10:week 4, kg/kg | 2.53 | 2.22 | 2.53 | 2.23 | 0.140 | 0.958 | 0.006 | 0.911 |
| Pig average daily gain, g | ||||||||
| Weeks 4–7 | 328 | 316 | 387 | 388 | 14.4 | <0.001 | 0.717 | 0.667 |
| Weeks 7–10 | 533 | 535 | 543 | 546 | 20.0 | 0.502 | 0.861 | 0.995 |
| Weeks 4–10 | 427 | 423 | 463 | 465 | 10.0 | <0.001 | 0.892 | 0.749 |
| Pig average daily feed intake, g | ||||||||
| Weeks 4–7 | 324 | 321 | 376 | 379 | 19.4 | 0.012 | 0.982 | 0.887 |
| Weeks 7–10 | 926 | 984 | 1060 | 1057 | 30.0 | 0.002 | 0.353 | 0.295 |
| Weeks 4–10 | 607 | 632 | 691 | 698 | 20.0 | 0.006 | 0.498 | 0.717 |
| Pen FCR | ||||||||
| Weeks 4–7 | 1.10 | 1.06 | 1.02 | 1.04 | 0.041 | 0.187 | 0.841 | 0.486 |
| Weeks 7–10 | 1.82 | 1.87 | 1.97 | 1.97 | 0.063 | 0.066 | 0.719 | 0.714 |
| Weeks 4–10 | 1.53 | 1.55 | 1.53 | 1.57 | 0.034 | 0.756 | 0.39 | 0.685 |